The Windmill was the top-performing AC unit in our tests, outperforming all other window and portable units. It dropped from ...

Key Points Power on the AC unit during the off-peak hours and shut it off just before peak hours take effect.Use a fan in ...

This saddle-style air conditioner preserved my window view and cooled a 300-square-foot bedroom quickly.

These compact air conditioners provide quick relief from the heat without making you break a sweat to get them installed.

Lee Wallender is a home improvement writer of nearly 20 years and specializes in home remodeling, repair and maintenance. Cassidy was an updates editor whose main responsibility is to write and edit ...

A room air conditioner can make a sweltering space comfortable again, especially in older homes, apartments, and additions where central air falls short. The bigger challenge is choosing between a ...

As is the case for many people, my home cannot be retrofitted with central air. My 100-plus-year-old Brooklyn apartment, which features prominently in my seven years of air quality reporting for WIRED ...